What are some things that trouble you while battling Ike?
Ike's ability to keep Ganon away with his range while covering his *** with jabs is annoying. I still occasionally try to capitalize on the lag of Ike's F-Air only to be hit with a jab combo as I approach.
What are some ways Ike players can gimp you?
I sometimes get gimped out of stupidity. The windup lag on Ike's stronger moves sometimes make it easy to slip up and dodge too soon. It's also pretty easy for Ike to spike a Ganon that hasn't learned to sweetspot with his >+B. The fact that Ganon's up+B doesn't always sweetspot the edge(Not sure if anyone else has this problem) can sometimes cause issues.
Do you have an advantage against ike?
Hells yes. Once Ganon closes the gap between himself and Ike, things go drastically in Ganon's favor(IMO). Just getting in range for a D-Tilt(which has range just slightly shorter than Ike's sword) puts Ike in the air where Ganon is completely capable of wrecking him from below. An F-Tilt at the right percentage forces Ike to use his Up+B to recover( where Ganon could space a F-Smash or another F-Tilt to end the stock) or just kills him outright. The fact that the Murder Choke, one of Ganon's primary methods of closing space, guarantees a hit with one of those tilts spells out disaster for Ike. I've only played one Ike player, so I'm not sure what method of recovery is most popular, but if he tries to Quick Draw onto the stage(Not sweetspotting) then a Down+B will KILL him regardless of percentage(I'm pretty sure of this) since it cancels the hit and then sends him almost horizontally backwards.
What advantage does ike have against you?
Range. It's that simple, but it's also that important. With Ganon being the slow mover that he is, most methods of quickly closing the gap require a bit of a commitment, and Ike has no problem punishing failed attempts. The acceptable level for human error is also higher for Ike because of his range. Camping with fairs and jabbing Ganon's approach is enough to wreck inexperienced Ganons and can still catch others. Personally, I believe this matchup to be fairly even between experienced players, but even then Ike will have the more "comfortable" time.