RE: World Models 42% Ultimate Biplane
Typically, motors and ESCs are not rated for both max voltage and max current at the same time. This is all part of the specsmanship. The total power level (voltage times current) is what really limits these components. Further, there are constant ratings and peak ratings so in applications like R/C, you can often obtain a sizable increase of power for short periods (5-10 seconds) which can be used for certain maneuvers (knife edge, pull out, verticals, etc).
As far as their "110cc equivalent", their "20 h.p." is closer to a DA-200 power level so you have to take these suggestions with a grain of salt and perform some tests.
Time will tell...