Tony Allen and Marquis have the same value.
One is a decent slasher with an okay mid-range jumper.
One is a turnover prone slasher with no jumper.
One is an above average wing defender.
One is a top-level wing defender.
Both are injury prone.
They have the same value.
Defense; Tony >> Quis, but Quis has better size. Quis is more of a natural playing behind Pierce at the 3, Tony can play there but he's undersized.
Shooting; Tony <> Quis, they both suck. At least Quis doesn't take as many bad shots, though.
Slashing; Tony <> Quis. Tony's probably a better finisher, certainly a LOUDER finisher, but is far, far more likely to lose the ball on the way to the rim.
Finishing on the break; Tony >>> Quis.
Ballhanding; Quis >>>>>>>>>>>>>>>>>> Tony. Tony needs to learn that his foot is not technically part of the hardwood.
Versatility; Quis can be a deep-backup at the PG spot, along with backing up the 2/3 spots. Tony's mostly a SG, he can play the 3 a bit on D (undersized) but you have a hard time breathing when you ask him to play point.
All in all, I'd take Quis. I think Quis gets a bad knock because he never seems to be playing hard or really aggressive, he just seems to coast through the games even when he's playing pretty effectively. He's the anti-Tony in a lot of ways, Tony is a very noisy plater but that's often to his detriment. Quis is a pretty solid defender and it's always a good thing to have another ballhandler/distributor on the court.
I think Quis finishes better near the rim than TA. TA can dunk, but on his non-dunks he basically just throws the ball at the rim. Quis can actually finish.
Quis also has a midrange game. TA doesn't have any jump shot.
TA is more explosive. This can mean more charges, but it also means he can better get to the rim when he is feeling confident. You can also give him lobs.
I think TA is a better offensive rebounder. Quis runs the offense better. TA is a far more disruptive defender and has much faster hands. TA, like Rondo, can pluck out the ball as players pass by. Quis cannot do that.
Quis may be bigger, but TA is strong.
I am fine with Quis, especially if our 15th man will be a 3 (for when he is injured).