Who is going to be better in the next few years and why?
Hunt. Why? He has a better overall skill set and more tools in his belt. We can look at the objective stats that were posted earlier by other members which clearly show Hunt is the "better" player, and in a team that has a pretty handy #6 in Anthony Milford to take some pressure off in terms of kick meters, runs, run meters, etc. This shows that Hunt is objectively more effective within his team, and there's no reason to think this type of trend wouldn't continue.
Hunt is playing a slightly different role this year, with Milford and Macca doing more kicking and Boyd and Milford doing more running than they did last year (at least subjectively to me it would seem at this point). It's taking him some time to get used to this, as it would appear, however his last 2 games have been much improved, and last week was probably his best game this year.
Now, if you want to compare apples for apples with Taylor, take what Hunt was doing in his first season as the Broncos #7, and in the first 10 rounds or so, he was killing it - I even made a little video montage a while back.
Not taking anything away from Taylor, he's certainly talented, but to make any prediction beyond that would simply be guessing. You gotta go with the bloke who has the runs on the board, the one who has more tools, the one who is tested and the one whom is objectively, at this point in time at least, a superior player.