This is me. I actually did take break from RDR to play the second DLC, which is one reason I'm so far behind on RDR2.It's pretty phenomenal. If I wasn't playing RDR2 right now, I'd be playing Spider-Man, and I know that as soon as I want to take a break from RDR2, I'll hop back into my spidey suit, and resume slinging webs around Manhattan.
Web-slinging is better, but the fast travel is worth trying a few times, not only for the achievement, but for the amusement factor of Spidey hanging out in the subway train.I've heard multiple people say webslinging is so fun they don't want to use fast travel. There's not much more that needs to be said about a Spider-Man game.