So, with DDD, a place to take him would be something like Battlefield, right? I'm sure there are more stages than just Battlefield, but that's the only place I can think of right now.
Battlefield is generally your best bet, I'd say; it's easily Ike's best neutral stage. Pirate Ship is another good stage to take him, since he has no spikes and, given his size, you can easily get an Aetherspike off and then proceed to go for the spikes. Or, if he starts airdodging, you can just bait the airdodge and BAir him out or, if he's low enough, DAir him.
2nd match:
0:13 - Good job getting him in the jab combo, but you should've stopped after he got out.
0:22 - Something similar to this happened in the previous match (you got stagespiked, but your opponent was going for the same thing); when recovering against Marth, try to Aether such that you land on the stage and not the edge, since Dolphin Slash can get there VERY quickly.
0:24 - Rather than come down with a FAir, you should've dropped down and quickly pressure him with your invincibility by just running at him and forcing a reaction. They can either jump, shield, roll behind you, roll away from you, or spot-dodge. Charging an USmash covers three of those options, making it generally the best form of punishment for re-establishing control.
0:37 - Why did you just stand there after he used Counter? You could've easily punished with a jab combo or a USmash at the very least.
0:42 - You read him properly, but you messed up your spacing; if you're baiting an airdodge, try to keep your opponent behind you but slightly above you; that way, you have the option of either UAir'ing or BAir'ing them.
1:06 - He had airdodged at 0:42, so you should've been able to guess that he would airdodge your DAir. Most of the time, your opponent will only switch strategies if they get punished for it, so keeping a mental record of what they did helps a lot in baiting defensive maneuvers. You also got impatient at 1:12 and missed the kill because of this.
1:21 - You probably did it out of frustration, but you should not be using FSmash when you're opponent's that high; you should've used another move that is much faster and has a better chance of hitting (like USmash).
1:25 - DSmash? I'm just going to contribute that to simple player error.
1:36 - If your opponent shields the jab combo, you should either stagger the hits or go for a grab rather than try continuing it.
1:45 - Airdodging is better than BAir when it comes to stopping your momentum if you're getting hit towards the horizontal kill zone.
1:46 - Again, you didn't really use the invincibility frames upon return very well; rather than going for the grab you should be going for a way to deal a lot of damage while establishing momentum.
1:53 - You were DI'ing out of the FAirs, which is good, but you failed to DI the FSmash at all; you should've been prepared for it, since he uses FAir -> FSmash a lot and because of the audio+visual cues of the attack.
1:57 - Your opponent's % was far too low for FSmash to be a good option; it feels good when you land it, but the risk of missing, especially this late in a match, outweighs the potential gains of hitting with it.
2:18 - Your opponent likes to airdodge through your attacks a lot; you should've realized this and, instead of jumping up with the BAir, either wait for the airdodge and BAir or use an USmash to cover most of his landing options.
2:20 - Bad DI; you should've realized you would be hit as soon as you rolled and your opponent didn't attack.
2:29 - You missed an opportunity to Aether him through the tree to punish for the DSmash.
2:34 - Again, bad DI on the FSmash.
3:00 - On the last throw, you should've pummeled for extra damage and then use BThrow instead of FThrow so you can attempt the BThrow -> dash attack combo rather than just throwing him and letting him go.
3:13 - Why did you roll after his airdodge? You should've ground-stalked him with an USmash.
General comments: You played too impulsively, missing a lot of opportunities to punish for airdodging. If I recall correctly, the only time you made a huge profit by waiting for the airdodge was at the very end with FSmash. Use USmash a lot more, it covers the most area out of Ike's other attacks (Eruption's area might be greater than or as good though) and is much faster than his FSmash. Although it's your style to hit your opponents with aerials, I suggest that you stalk your opponent on the ground more; it makes landing those USmashes and tilts much easier, and they generally do more damage and knockback than Ike's aerials (UAir being the exception). You also need to work on your DI; every time you leave yourself open, you should be instinctively ready for the incoming attack and DI'ing appropriately. A lot of the times you got hit with the FSmash, you just went straight out at a roughly 30 degree angle.
