[ggreer]

I believe Raptor 2 operates at a lower chamber pressure. According to Wikipedia, Raptor 3 is 350 bar, and its thrust to weight ratio is 183.6:1.

BE-4's chamber pressure is low for its design, but it would be very difficult to increase it to Raptor's levels. Full-flow staged combustion causes the propellants to be gasses when they enter the combustion chamber, and chemical reactions in gasses happen more quickly, allowing for efficient combustion in a smaller combustion chamber. The smaller volume makes it easier to contain higher pressures.