You are a builder. Is this something you picked up from Civ 5 and 6? Apart from monst I rarely build religious buildings.
25ad with 70% science I am 268 beakers. You are 146. Almost double your science. If the CS slingshot had pulled off it might be higher.
25 AD is Turn 116 and you have 268 beakers, on my T135 I have 253 beakers. That's a 20 turn difference,
but, did you have Isabella plotting on you as I did? That put me off by a lot of turns to build defenses.
You can't just compare BPT like that if you didn't have to invest into military.
I only build monasteries or skip religious buildings completely, going for temples as well this time, because I'm going Sistine Chapel (either Isabella or Pericles are bound to grab it, and I just don't want to deal with that), and I also grabbed MoM, the Parthenon and GLib during those 134 turns. I think all three now have Theocracy, and I'd hate to lose those extra 4 hammers per city to hinduism, so either I build it myself or I pray one of the buddhists builds it.
And yes, I'm a builder. It's hard to learn why and how to stop being a builder if you don't gradually reduce buildings to a bare minimum. Since we are going to space, might as well have the core infrastructure in place. You'll notice I don't build corthouses or marketplaces, just the essentials (to which I added monasteries). I know this style might be strange to you, but if you look at it closely, everything I build synergizes well together, even if its not "optimal".
There's always the alternative of getting Ivory from Zara and elepult my way to victory with granaries, libraries, forges and ballcourts, because that's way more "optimal" than going space on this map.