The below charts are a bit vague, but should give you an idea of the hierarchy of cards. There's one for 4k, but I refuse to post it on principles as anyone who utters the word "4k gaming" goes onto my idiot list. It's a marketing gimmick and for PC gaming there's no need to go about 1440p resolution.
Long term, I'd base a purchase on the 1440p results. The massive benefit of PC gaming over console gaming is the increased FPS so makes sense to make use of that. For instance, Hellblade 2 on Series X is going to be 30 fps and Spiderman 2 on PS5 is 60 in performance mode. When you hit 100-120, the experience is so much better.
Console slandering aside, you can see below the 4070is is ~20% better than the 4070. This is the problem with PCs, as there's always a better part (unless you get a 4090...). I put the below so you can see roughly what card is comparable. They vary per game so use the below is a rough indicator.
Just to make yourself more comfortable, I've put some reviews from my most trusted reviewer at the bottom too (time skipped to the conclusions...). I put a link to the 4080 super too as that was the most recent release that compares the 4070, 4070ti etc.