For rendering intensive applications the 6 core will do better. Not necessarily 50% better (since clock speed and other overhead factors including the software control how well the performance scales) but it will definitely be a significant time chunk.
The second CPU is a good bit quicker (2.6-3.1.ghz) but I notice it says it only has 4 gigs of ram? That’s a non starter. RAM likes to be allocated per core, so for a 6 core machine I’d suggest running 24 gigs of ram. You don’t need to buy it that way from the factory (you’ll pay a hefty premium), just upgrade it once you get the machine and save some money.