Well, ROB:Sheik is just a bad MU for us, no matter which way you slice it. ROB can't really outcamp
anybody with decent camping potential. I would just prefer space so that I can abuse ROB's really good tilts, fairs, and boost mix-ups. Performing grounded sideB preemptively (as a 'read', in some cases) is kind of a necessity in a lot of MUs, not just vs Sheik. Sheik also has her own blindspot, which is directly beneath her. Yes, she has some nifty aerials, but they do not cover that space well and we can force trades, which would be in our favor, or just beat out her stuff. Therefore, ROB can Rotor in during a few points at neutral. If Sheik is on the ground and ROB is somewhat close, he can just zoom in. If she shoots needles, then you reflect them. If she does nothing, then you hit her or her shield, but you can make sideB safe if you space it so that you end up behind her (that move doesn't really have enough lag for her to WD OoS and punish). If she jumps, you end up right below her and aerial needles can't stop you. You can also just Rotor in on reaction to her jumping. This is part of the reason I prefer large stages; I get space for sideB to be a major part of my approach mix-ups.
The problem I have with smaller stages is that ROB's CQC options are terrible. His tilts and smashes aren't safe at that range, jumping puts him in immediate danger unless he is boost bairing away (which isn't much of an option on small stages), and even directs hits barely accomplish anything. CC dsmash, his best CQC option, can just be SDI'd and punished. There is another major problem with being in Sheik's face all the time. Sheik is the queen of grab punishes, her aerials are safe,
even when CC'd, her crouch/crawl avoids a lot of things, and her CQC options in general vastly, VASTLY destroy ours. She can completely annihilate us when fighting up-close. If we can get a lucky non-SDI'd dsmash or a grab, then we can get a combo or CG going, but Sheik's jab, tilts, grab, and even her dsmash just beat us out at the in-fighting game.
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Dandizzle
, you should just get SG on the PS3 so you can play with me.