It is. CV is basically a science victory, except you don't need to research the entire tree, but your goal is to reach the Refrigeration/Internet/maybe Radar as soon as humanly possible to increase your tourism before the AI's amass a ton of culture. The earlier your tourism skyrockets the better.
Science has a number of set techs which means a certain set amount of beakers to it. No matter what game, what dirt, what AI, you just need a set amount of beakers to win the game.
Culture on the other hand, will be very different when on one map the highest AI makes only 30k culture and on another the highest has 50k. Yet different again when the target runaway goes up to 70k+. While 500 tpt at t250 might win in most games, in some games it might not be enough.
If you gimped on wonders/reach the techs very fast you don't have enough time to get those wonders/landmarks built, you're probably sitting at a lowly 300-400 tpt, hardly skyrocketing, and in a lot of situations that is simply not enough. AI culture need only broadcast towers/hermitage to be maxed out; so the techs required to max cpt is much lower than the techs to max out tpt, meaning unless you do it VERY fast, you might find yourself stagnating or rising very slowly in influence. You only have a limited number of GMs after all.
Also, to get beakers faster, means to also lose out on hammers/culture and wonders/archaeologists too; everything has a cost. You must balance this cost according to the AIs in the game. It is by far, more complicated than SV ever will be.