Well one of them Jesus says specifically says "this will happen THIS generation" the other says "until". Putting this in the future is 1 billion% eisegesis, you HAVE to add it. It does not say that. Again you have to break out charts and reference guides and other teachings to make His simple word say what you're proposing here. It doesn't say that, how does a future interpretation make sense in the light of Jesus saying things like "Don't weep for me, weep for your children", not to mention the FACT it is talking about the end of the "age" not world, and recorded history shows us this took place.
I already addressed the fact that I too believe it is saying "the END [SINGULAR] of the AGE [SINGULAR]" (NOT the end of the WORLD) in my Post #957 on the previous page [pg 48, I think] (at the top of that post--see there--see if you can respond to those issues I put there):
https://christianchat.com/threads/what-is-your-best-proof-for-a-pre-trib-rapture.188798/post-4122151
These things you're posting are a weak argument I reject. Think you have to stretch and add to Gods word to get it to fit your beliefs, I think that's a wrong handling of Gods word and I like the teachings that line up perfectly and don't make Jesus a liar.
I also had addressed the "this generation" issue... (in a diff post... I may have to find later... it's probably in this thread too LOL)