I think Pulis is right in saying he's not fully fit, the Southampton fans will agree with this statement (it isn't a case of Pulis being overly negative here, although I agree he can be like this with unfit players)
The issue with Rodriguez is that after his big injury, he's kind of turned into an Anichebe-type-player with his fitness. Last season he could play a handful of games, then miss some and he never truly kicked on and got a good playing streak. Maybe it's a mental thing, maybe unlike Vic he will snap out of it and his body will adjust, but it's pretty clear he hasn't played a good number of games after each other which is why Pulis is saying he's not sharp which is completely true.