i could be wrong about this, but im fairly certain that yes, it will look the same.
same goes for 7D video and T2i video, it's the exact same since the sensor is the same.
the reason why the 7D has a better reputation for photography is that it is much more optimized for photography than the T2i (better to hold, i think a faster autofocus, faster burst mode, better for time lapse photography maybe, stuff like that). so even though the photos will look the same, the 7D is more professional tool for the job as far as photos go (T2i is better for video)