Well, firstly, Ike recieved tournament results recently at TBH5. With the Shield Stun changes, Ike's Fair becomes a deadly move across the board, as it is now safer on shield, auto cancellable after the hitbox comes out, and a decent kill move off the side. Ike's BAir is arguably his best move because of how quick it is in neutral, but how deadly it is, especially on the ledge trump. Also, Ike's 3-hit Jab is one of his best damage racking tools, and Jab 1 -> grab works if your opponent tries to block your Jab.
That's not to pan Roy though. From what I've found [I'm training with Roy, though trying to train myself with Marth and Roy at the same time wasn't my best idea; my Marth is pretty terrible, but my Roy's decent.] Roy, in the end, works better as a character to play footsies with, dancing around your opponent until they mess up, then punish them severely with a grab combo. Ike is slower, so with Ike, you're playing a much more patient playstyle, using moves like NAir and FAir to wall out your opponent until kill %s and finishing them off with a FAir, Up air, Back Air, or Eruption as an edge-guarder. Both of them can have no trouble killing or a lot of trouble killing, due to Roy's sourspot and the fact that Ike's best finishers are largely commital outside of BAir.
I think Ike edges out Roy just a little bit due to what I mentioned above, as well as Ike's lack of a sourspot, longer range, better recovery [though not by too much], and Ike's own surprisingly quick combo game. They're both great characters, and it's nice to see marth not being the best fire emblem character for once. They're both top 20 in my opinion, [Ike's 19th, Roy's 20th] and they're both solid characters. I'm giving it to Ike for now, although it's always subject to change in the future due to balance patches.
[oh, and if you want to see my whole list, PM me]