Simpler answer: The B-2 is the only airframe that won’t get blown out of the sky AND is capable of carrying the GBU-57. The B-52 would work in uncontested airspace. Israel has likely destroyed a lot of Iranian IADS, but not all, and the B-52 has a big ass radar cross section and limited ability to counteract an incoming SAM. Given its intended purpose, I’d wager the B-2 is a bit better off there. https://www.wsj.com/world/middle-east/israel-inflicted-severe-damage-on-irans-missile-program-and-air-defenses-207aafae Sent from my iPhone using Tapatalk