Ever since I had a taste of the sort of earnings high tier aircraft can rake in, I've developed the opinion that compared to WoT and WoWS, WoWP has the most balanced - and arguably best designed - economy of the three titles. If the devs of WoWP could be pinned for doing anything amazing regarding this game, I would say it is the game's economy system.
Ironically its the sole reason I have for the most part left WoT to gather dust, that game's economy is the worst of the three by far. In contrast, WoWS's economy, while not bad, isnt structured as well as WoWP's. In this game, the higher tier you go, the bigger your earnings get; a Tier three that has a 14k personal point performance will never make more than a tier nine that has a 14k personal performance, for me, that encourages me to go down to those early tiers less. That means less seal-clubbing to extreme degrees.
One of the biggest differences between WoWP's economy, and the economies of WoT and WoWS, is that while the pricing in WoWP matches that of WoT, its very difficult to hemorrhage credits constantly at the high tiers. Unless of course you load universal ammo on a high tier aircraft, but honestly I've had no need for it.
In WoWS its easy to lose a large amount of money running tier 10 ships, and even in tier 9 there's a decent risk of losing some. In Warplanes, the most an average pilot could lose in one battle in a tier 9 alone - from my experience - would be 20k, and I've only had that happen twice. In WoT, its rather difficult to earn money in a tier 10, and one particular tank, the E100, is a black hole in terms of expenditures, losing close to 100K a battle just to run the tank is in my mind ludicrous, considering people who run it also have to load gold ammunition for its top gun because its AP doesn't do well enough for its tier for how inaccurate it can be.
Quite frankly I wish WoT would do more about their economy system, as not only credit earnings for that game, but even XP earnings are frustratingly poor. In fact, I have never been able to get a tier 10 in WoT without premium time. And I have four tier 10s in WoT. Even with premium tanks, the earnings are disappointing. How did the devs of WoT fix this? boosters...
They even went as far as to put them in the game shop... rather than just bring it up to the standards of WoWP, or even WoWS for that matter.
In the two other titles, a player like me - as long as i dont buy anything - could take just half a day on standard vehicles to earn roughly 1 million credits. With a mid-tier premium ship in WoWS i could make 1 million in less than 10 battles, thats three hours. To pull that same stunt in WoT, i'd have to use a premium tank, be running premium time, and be running credit boosters.
TL;DR on this rant: Thank you WoWP devs for being geniuses with the Economy system of this game, WoT should be following your example.