Again, Gasol is a mid-range shooter who posts up smaller opponents which is means he's VERSATILE.
Tim missed POINT BLANK shots which he should have made even if Hakeem was playing weakside defense.
He was unplayable against the Duds so if he wasn't useful against a team w/ a traditional lineup then what is the purpose of playing him?

(To guard washed up Z-Bo?

)
You forgot to mention Pau was playing w/ the likes of Noah/Taj who don't command double teams & are actually ignored by the defense which won't be the case w/ LMA. Pau is similar to Boban when it come to finishing POINT BLANK shot at the rim, he can dunk or tip-in shot while barley jumping.

(Pau's issue is finishing through contact similar to Softridge)