Maybe you should ask the Rubio and Kasich supporters if they are willing to admit that Trump will be the nominee. Trump is doing much better than Clinton.
Uh...no he's not?
He is, unless you're counting superdelegates.
To just compare delegates is way too simplistic, especially since the parties allocate them differently. Hillary has much better odds if you look at the fundamentals of the respective races. The betting markets agree. Hillary is at 95% odds and Trump is at 78%.
odds are subjective, results are objective