Killer small block build

Being a newer member I generally just lurk and soak things in. On this particular topic I can speak with much more knowledge than most. Having a ton of experience with 400+ci fire breathing small blocks..........that build and dyno numbers are so far off I can't even believe they were published.

A DLM/WOO engine from the 90's would put out numbers similar to what is being claimed here. Here's what went into those engines.

Block: Aluminum (Donovan, Rodeck, Ect)
Heads: Altered angle with flow numbers that could inhale that engine
Cubic Inches: 410-440
Compression Ratio: 16-18:1
Valvetrain: Belt driven, solid roller, needle bearing cam(yes cam), back cut titanium valves
Rotating assembly: Lightened everything(Oliver, Callies, Crower, ect)
Oiling: Multistage dry sump
Ignition: Vertex Mag
Induction: Mechanical stack injection
Fuel: 100% Methanol

These engines cranked out about 700-740hp at around 7800rpm. They also required a full rebuild roughly every 300 miles. So this 434 built in an OEM block(LOL) with W2's, a small hydraulic roller, wet sump, pump gas 10:1, and a 750 carb cranked out the same HP..... at 1300 less rpm?