What sort of club needs 250 hours to fly the PA28? Are you sure they don't mean the more powerful versions like the PA28R-200 or similar?
If anything the C172's cockpit is slightly larger...I don't know but that's the impression I get from sitting in it, also it has two doors. There's not much in it. The PA28 I find more pleasant to fly (especially the Arrow) but that's a different story.