I want to credit the guy who told me this when I was concerned about a Monroe-Sully pairing.
Mahc (I spell it like that) Gasol and Zach Randolph worked well in Memphis. Athleticism is not always THE thing.
Please don't tell me you are comparing Marc Gasol with Omer Asik in terms of talent...
Gasol and Randolf worked well together because both are exceptinally good players and borderline All-Stars. Asik is nothing even remotely close to that.
Im not comparing them talent wise. Im comparing their quickness (or lack thereof).
They worked well defending despite not having elite big man athleticism. They're just tough, bruising and go for the boards. Offense should not be a problem as Sully now has legitimate 3 point range, so there's no need for clogging the paint for Asik who probably has no range.
The "slow" part gets noticed on the defensive side, in which again, if Mahc and Z-Bo (who are not fast guys) can handle it, so can Asik and Sully. And it's not like Asik is slow too, his footwork is solid on PnR's, he rotates well and challenges every shot. Bigs can be as quick as they want against us, they would still have to worry about Asik protecting the paint and both him and Sully being tough outings on the block for rebounds.