I can't find anything on who actually did the pump. It doesn't look like a standard asetek mount, nor coolit, and with as much as they throw grade8 motor at you (70k hrs is more than most fans), I'm thinking it's a custom in-house job. There's not many ppl who actually make those components, just like psu's, half a dozen OEM and a 1000 vendors. So the chances of the radiator performance being similar to the H100i is pretty good. What it usually boils down to is the fans. Just how well they are balanced to the rad. Take (for instance) the original non-rgb H150i Pro. Great cooler, awesome fans, quiet ML's that did a terrific job. The new H150i Pro RGB sucks. The fans look good, but that's where it ends. Performance is terrible compared to the original, Corsair just swapped fans for fancy lighting, and since the motor housing now has to also house the ARGB pcb, the motor got shortchanged. Not the right fans for the job.
The Segotep fans are decent static pressure fans, but only get that at 2000rpm,so consider them noisy from the start. Cutting back on duty cycle to a more reasonable 70% is still 1400rpm, quite audible.
So here's the kicker. Spend a little more for a known AIO, go shopping on other websites that might have a better solution, or get the segotep and then spend more money for a halfway decent and quiet fan. End result is you spend roughly the same all together, and with the segotep there's an unknown variable in the pump.