Oh God, yes Rampage ABSOLUTELY still can compete with top people, there is just a myriad of roadblocks in his way.
The biggest of which, is obviously himself: his laziness, complacency, unwillingness to evolve with the sport, mental mindframe and overall lack of "eye of the tiger".
Not to mention the legion of sycophants who have allowed Jackson to become the "Emperor with no clothes" and the most abysmal training staff that has ZERO CLUE how to push Rampage as a top caliber fighter. He's not working with the top guys, who have his best interest for performance in mind and those who he's training with aren't taking him to new horizons, rather just cashing his cheques and letting him rule the roost.
If Rampage could pull his head out of his ass, join a camp like AKA who are going to force him to compete at a top level and surround himself with those who don't care if he's tired or bored or disinterested and just push him to be his absolute best, I think Rampage is EASILY a top five still. The present tape on Rampage hasn't changed too much in the past five years and his team has just let him do what he wants, if he could shift his paradigm and reimmerse himself as a MIXED MARTIAL ARTIST, he's a terror.
Problem is, I highly doubt that will ever happen.
MY MMA RANKINGS
HW Velasquez Cigano Werdum Cormier Bigfoot Barnett Mir Browne Nelson
LHW Jones Machida Evans Hendo Davis Goose Teixeira Shogun Mousasi Bader
MW ASilva Belfort Weidman Jacare Okami Rockhold Kennedy Consta Bisping Boetsch
WW GSP Hendricks Condit MacDonald Diaz Maia Fitch Kampmann Ellenberger Pyle
LW Bendo Alvarez Maynard Melendez Thomson J.Miller Diaz Pettis Chandler Grant dos Anjos
FW Aldo Mendes Curran Lamas Frankie Zombie Cub Lentz Kawajiri Siver