I'm curious as to how you came to that conclusion. Did you run any tests, or is it just a general observation? What's your computer hardware like? This isn't an accusation of anything, I promise I'm genuinely curious.
This is a bit of an apples to oranges scenario, because the algorithm and architecture is not exactly the same, despite the game functioning identical.
The main weak points of LÖVE that we hit were mainly around embedded video playback though, which is probably very well optimized in chromium.
https://love2d.org/forums/viewtopic.php?t=94760
It's unfortunate as Love2D is generally VERY snappy on x86. I used it on a 300MHz laptop back in the day.
Open source is not a one-way street. By publicly disparaging open source projects, you're actually harming the ecosystem you rely on.