Although Hillary is against TPP now, she was pretty open to TPP in the past. This is what I’m talking about in running to the left in primary and running back to the center during the general. I don’t think Bernie would ever support TPP, even in the general. That’s what’s the difference. Bill was pretty open to free trade (NAFTA).
ACA, I won’t even go there, since I dislike both stance on it. But there’s a difference. Hillary is willing to compromise about it, while Bernie want to go straight to single payer now (no middle ground).
As for taxes, you can chalk it up as gut feeling, since neither of them have given an exact tax plans with all the rates for all the brackets. However, as I said, Bernie offered up much more social benefits than Hillary, and that’s where I think in order to balance the budget, taxes would have to go up a lot more under Bernie than Hillary.