Using V8, I got the following results when compiling performance.cljs with advanced mode:
[data array-data], (js/sumXsAndYsJs data), 1000 runs, 41 msecs
[data array-data], (sumsXsAndYsWithDotimesOnArrayNativeFieldAccessAndMutableLocals data), 1000 runs, 114 msecs
[data array-data-records], (sumsXsAndYsWithDotimesOnArrayNativeFieldAccessAndMutableLocals data), 1000 runs, 124 msecs
[data vec-data-records], (sumsXsAndYsWithDotimesNativeFieldAccessAndMutableLocals data), 1000 runs, 362 msecs
[data vec-data-records], (sumXsAndYsWithLoopAndNativeFieldAccess data), 1000 runs, 1115 msecs
[data vec-data-records], (sumXsAndYsWithLoop data), 1000 runs, 2065 msecs
[data vec-data-array-map], (sumXsAndYsWithLoop data), 1000 runs, 2530 msecs