Terry might not be a professional deadlifter, but he was still always shown as very athletic. I'd expect him to be above average in that aspect. He's probably around 200lbs and a high school athlete. His deadlift is probably somewhere between 200-300lbs. Deadlift is more technique than raw strength at that level though, so it really doesn't mean much.
Future Spidey isn't as strong as the original recipe, right? I'd guess they're pretty close but I'm not actually familiar with this Spidey. Given the nature of comics I'm sure they both have a feat somewhere that's far beyond what they should actually be capable of. It just depends which one DB cherry picks to favor their argument.