The months of April-August are always going to be lower selling months. This isn't an issue at all. Historically, there's been very few instances of 360/PS3 exceeding 200K for April.
The uptake on next-gen consoles has far exceeded any other generation. I don't think EA or other publishers are worried about adoption at all; in fact, given that many titles are still cross-generational, I suspect that publishers are quite surprised at how much quicker the core audience has transitioned to the new generation.
360/PS3 aren't really selling anywhere close to the PS4/XB1 versions of new cross generational games.
Plus, with the early lull in software, it's not really surprising to see sales fall within historical norms after demand has been satiated.
PS4 doesn't need a price drop, it just needs more content that furthers widespread adoption. Destiny is going to be pretty huge for them, because friends will want to play with eachother online, and people stuck in last-gen will be forced to upgrade.