Racing flow benches

Regards flow benches… i had a set of W5 heads that ended up making good power.
Ryan ported and flowed them. They peaked in the high 320’s, just like he later posted on his website under the W5 section. This was his first W5 head. He was schooled by another guy on what to do, and if i remember right, copied and exhaust and intake and copied that work onto mine.
An extremely well known Mopar engine builder flowed them as well, peak number they got was 297. Best Machine.
Another very well known head porter, Mopar guy, later flowed another set of W5 heads on his bench, which if anything, likely were a bit better than mine.. that set went 299 or so as i recall.
Neither set of heads went remotely close to 320 xx on two different benches, yet, they worked. 700 lift roller.