Simple math is 1440p is 78% more pixels vs 1080p, 4k is 4x more pixels, and thats how 3060ti/6700xt stack up vs other pc gaming gpu's:
NVIDIA GA104, 1665 MHz, 4864 Cores, 152 TMUs, 80 ROPs, 8192 MB GDDR6, 1750 MHz, 256 bit
www.techpowerup.com
So for same settings and 1440p as for recommended 1080p- u will need 5070/4070ti/9070 gpu class for stable 60 no matter what, 1440p with few dips in most demading scenarios likely 3080ti/3090/4070ti/5070 grade.
For 4k who knows if 5090 is enough, likely is close with some rare dips below 60 here and there in most stressful scenarios(can easily be fixed with tiny bit of dlss tho, u wont see the difference, new transformer dlss model is fire).