People please remember to run calcs before making claims!
U-Turn is also cool because it OHKO's Mewtwo, Darkrai, and the new Lati@s.
4 Atk U-turn vs 4/0 Mewtwo 59.9% - 71.2%
4 Atk +1 U-turn vs 4/0 Mewtwo 90.4% - 106.8%
4 Atk U-turn vs 64/0 Latias 66.9% - 79.5%
4 Atk U-turn vs 4/0 Darkrai 75.2% - 89.4%
4 Atk U-turn vs 4/0 Latios 78.1% - 92.1%
Yeah you need some investment there. Given, versus Latias and Latios you are getting the attack boost so you can discount those. I honestly feel like Genesect is extremely underwhelming. Base 120 attacking stats are good in OU but they are just piss weak in Ubers where 105/90/90 defenses are considered frail. Genesect does have amazing coverage, but the words "Its super effective" does not equal a KO. Download is Genesect's saving grace, however, and the only reason why I'm not discounting it right away. Ubers craves a fast Steel-type that doesn't hand the momentum over to the opponent because on hyper offensive teams you often have to sacrifice something to faster dragons. Maybe Genesect will fill this void, but I have doubts. I expect there to be a lot of metagaming to force Genesect to get a certain boost. For reference equal SpD and Def = SpA boost, Higher def = SpA, and Higher SpD = Atk. With Mewtwo, I definitely want Genesect getting a SpA boost so it has to stay in and Bug Buzz. Sure it has more power, but then you have a choice-locked Bug attack to set up on with Ghost Arceus/Rayquaza/etc.