I may be wrong, but Bamford has been playing regularly recently, Obika has not. Makes a big difference - look at the howler Andy Carroll missed at the weekend.
None of the "big" clubs in the Championship have made any big money signings yet this transfer window. A cursory look at the list in the Telegraph suggests that Nakhi Wells to Huddersfield is the biggest transfer in money terms. Forest, QPR, Reading have not signed anyone.
I think this is a...