Drax w/ power gem will beat doomsday into oblivion, the power gem amps your strength, durability up to unknown levels. Drax was already at class 100 and with the power gem his strength is off the charts and plus he flies at light speed, uh doomsday is dead before the fight even begins. DC fanboys need to stop acting like doomsday is the ultimate being, only thing he is a walking pis at the highest order.
Drax w/power gem 10/10
Doomsday is known for being a big "hair-puller". And Drax doesn't have any hair. So, that right there is going to put DD at a disadvantage.
Next, Doomsday likes to slap a lot when he fights. Slaps and scratches and pulls hair a lot. And sometimes he throws feces.
I don't know if the slapping and scratching and feces is going to do much to Drax.
I have to go with Drax.