I know what you're saying and I agree, but Zlatan isn't as lazy or disinterested as people think.
He's naturally unfazed I think and has a bit of arrogance, but anyone who saw him for Sweden in the Euros can tell he cares and that he can put a shift in.
People exaggerate the difference in pace/defences I think from the PL and other leagues. He's played in two of the traditional top three leagues in Europe and it's not like Italian or Spanish defences twiddle their thumbs and let you pass around them.