is this true about a 350 sbc vs a sbm

having owned ford ,chevy and mopar stock cars, all were small blocks the main difference between them all is mopars were the fastest but required a lot of extra block ($) advantage 18deg head, chevy's, with there 4 bolt blocks, main bearing having there own oil galley, and 5 head bolts, you can run higher compression and both mopar and chevy have good flowing stock heads, there nothing you can say good about the 351w engine ,poor stock heads, bottom end to heavy .we won 6 champions ,took 2nd 7 times and 2 times finished8/9 in 15 years of racing .we one all the championships with the chevy's, mopar took home 5 seconds, ford 8/9. these were 25 races per year and we used only one motor per year with a well used one as back up. we fielded 30/35 cars per night with only 22 making the grade. so for hp the mopar won ,for higher compression, lighter rotating weight chevy won, the only good thing I could say about the ford is the dist is in the front.just my 2 cents