I think he could have done it. Maybe not everything, but but would have suited Maiden better than Blaze. I look at it from the perspective that Blaze still wasn't a main part of the songwriting process on The X Factor and Virtual XI, so at the very least I think The X Factor could have been a much better album if Joey had been in the band (Nothing could save VXI as far as I'm concerned).
The first time I saw Joey solo, there was a Maiden cover band on the bill, and Joey sang Flight Of Icarus and Hallowed Be Thy Name with them. Sounded great.