RE: powercleans with chest on 5*5
GBL, it's because some people have this thing called "life", my friend. Its a weird consept. These people tend not to train over weekends - what they do, i wouldn't know, haven't tried. For me weekends are fantastic days to train, more rest, can go to the gym around noon which i find is the best time to train, can eat whenever i want and so on.
I do my maximum effort deads/squats on sundays.