NixieFX vs three.quarks: the same 160-particle burst in one Three.js scene, measured

If you're adding particle effects to a Three.js game, three.quarks is the library most people find first. NixieFX is a newer option that ships a Three.js runtime. "NixieFX vs three.quarks" comparisons usually stop at feature lists, so I built the same burst in both, put them in the same scene, and measured four things: whether a run repeats exactly, draw calls, CPU time per update(), and how much each adds to a production bundle. The results go both ways, and one of them isn't flattering to NixieFX. Note: I'm involved with the NixieFX project.