As a general observation it does seem that almost every electric RTF plane whether jet or otherwise is generally underpowered. And if not underpowered most Parkflyers still want to soup up their bird to go faster. It comes down to market competition which means keeping the price as low/competitive ... enticing to buy as possible.

It would be nice if every speedy RTF electric plane was setup to have almost as much thrust in ounces as the planes weight, but that could increase the RTF price by at least another $50. Besides the biggest problem/hurdle in RTF electric planes is designing a power plant (more thrust and battery duration) that is almost as light as most RTF stock setups, yet gives at least 50% more thrust and the same amount of flying time.

IMO, there's the thinking by RTF manufacturers to sell Parkflyers a plane that will at least get them airborne with basic performance for a competitive price; while knowing that many Parkflyers always get the personal satisfaction of making modifications, like going faster ... even if its not always necessary. So a RTF manufacturer is going to supply just enough power plant (which may not be enough) so they have a sufficient profit margin; while enticing you to buy their plane at what seems like the best deal for the money.

Let's look in the mirror and face the fact that the majority of Parkflyers buy on impulse without first doing their due diligence. LHS staff know this all too well ... they risk being fired if they told most Parkflyers(general rule) what they really need to know, but more likely than not, don't want to hear/know.