ORIGINAL: Trundle
If you don't need the power when your learning simply throttle back it doesn't take a genius.
Nice in theory, but flawed in practice, it simply doesn't work for the average stud. That people struggle through and learn despite it is the miracle, more often than not a case of the blind being led by the blind. It's easy to pick 'em out shortly after solo. They're the ones who need someone to buy them a throttle servo.
Student performance isn't proportional to sheer intelligence. Flying, be it full size or RC, is a demonstrated competency thing, which in a large degree has to be learned by repetition and facilitate by using the best tools to ensure success and rapid assimilate at a pace with which they can cope with mistakes and reinforce success, which the 46AX isn't.
Even basic semi-competent throttle management requires awareness translated into action. It takes time literally and figuratively for students to react and learn this until it becomes anticipative rote. Excessive power or speed don't assist the assimilation curve. They detract from it. You lose half the effective teaching period of their useful concentration span in the air perpetually telling them to slow the model down because the model is ahead of them and exacerbating their problems, then waiting for them to hear you after you've said it for the fifth time because they're still load shedding under stress trying to catch up mentally with the model .... before they "Oh', just a minute I've got to turn again" eventually action it.
For that tiny price difference
And this ultimately is the root cause of the problem dressed up as economic justification. A false premise, because the inevitible consequence is that everyone buys more than one engine if they continue, and within the first few months. But more importantly, the huge $$$$ saving ammassed by flying within one's capability as they learn which is complimented by the 46LA in the first important confidence & experience gaining months, easily comes out way ahead in cash terms versus any preceived bigger pie for just a few pennies more misperceived "better value" triage. Dunno' how the morons who can't figure that out can stand the crash and replace dash for cash, let alone having to put an new ARF together every week!