Hitman is the not kind to be subtle about things. I can honestly say there is nothing to read in between the lines with Hitman. We wouldnt be hating on him if he just flat out said I want to battle him and him and I'm going to kill them. Instead of that he half bragging and half dissing his fans.
"Read between the lines" may have been a poor choice of words on my part. My point is that I think some people just see the part about "hating" and not the fact that he's confident enough to side bet a grip on his next battle. He is putting the onus on himself to prove that he's hands down better than any of the three he named.