Speaking of the Budokai and Tenkaichi covers, it's worth bringing up for those who may not know the covers for the Budokai trilogy and first two Tenkaichi games differ depending on the region, with the ones SSJ2 showed in the OP being the NA editions.
Japanese Budokai covers:
EU/PAL Budokai covers
Japanese/European covers of BT1 and 2 (only difference is the Japanese versions being titled Sparking and Sparking Neo respectively):
Comparing each version, I'd say the Japanese version of Budokai is the most bland and pretty similar to the covers of modern games, albeit a bit more stylistic due to the colour palette. I personally prefer the EU version of Budokai 1 due to nostalgia and it showing some elements rarely seen in covers such as having Base Goku holding the Nyoi-bo, though the NA version makes more sense seeing as how Boo Arc Vegeta and Lord :bitch weren't in the game makes it false advertising (though at least they praised the latter :bitch :bitch :bitch, also the CHADitz). Budokai 2 is one where every version was good, though I'd say the Japanese version stands out the least. The EU version has more style to it with the colour palette for the SSJ hair being a shade of gold rarely seen in DB art. It's hard to say which is better between that and the NA version, though I'd probably go with the latter due to the EU version basically being Boo and 2 and a half Gokus
filmed in front of a live studio audience. I'd say the NA version of Budokai 3 is the weakest for the same reason as JAP Budokai 1. I'd say the EU version is my favourite due to it being the only DBZ game other than its remake to give SS4 some shine, though the cover being of the game models does make the art less polished than the Japanese version.
For the Tenkaichi games, I'd definitely say both original covers are better. BT1's NA version is good, but I'd say the grittiness of the original as well as it having a balance between hero and villain characters makes it more distinctive. The NA BT2 cover with it being just Trunks with a slight showing of Goku in each era is a decent idea that's quite distinctive, though I prefer the display of the wider cast, it being the only main console game I can recall to have featured even one of the main Earthling trio, let alone all three.