At the end of the day, everyone has a type of player thats there preference.
Example, i like JDB, but if i had my way he wouldnt still be in our starting pack or even on the bench.
The guy has heart, is a tackling machine, but as a forward, i want a player that runs hard, bends the line, drags defenders etc etc.
Again thats my choice.
A forward needs to tackle, yes, and JDB does that better then most, but in my opinion he lacks in areas that are a must for a forward.
If we had a forward pack like the dogs for example, JDB would be excellent.
Other big mamals do the hit ups etc, and he can tackle his heart out.
We dont have forwards that can barge up field and make the easy metres to offord a JDB type player the luxury of just tackling.
So depends on each persons personal preference.
Hope that helps the debate