The simple fact is this: Thor right now is perhaps the most powerful he's ever been, and I believe he would far outweigh Sentry.
While there are a lot of people who would say that Sentry's powers are limitless, the fact is, even in spite of the psychological limitations that hamper Sentry, Sentry has been shown to have limits. Thor at many times (from killing the Midgard Serpent while under Hela's curse to the entire series currently) displayed a willingness to pull his punch. when Thor chooses not to, it is doubtful there is a Marvel hero out there who could match him outside the truly cosmic characters, such as the Silver Surfer (Who I put more powerful than Sentry by a hair).
Case in point, Thor openly said in the issue of his book that he faced Iron Man he's held back, but no longer (Especially against Iron Man).
If you're looking at Thor with the Odinforce, it's not even a contest....Thor wins out over Sentry. Despite all of his powers, Sentry is still a mortal man. Despite the Odinforce, thor is still a god.