I was way over hyped for last month, thinking the ps4 might sell like 380k-400k.
Then NPD is out and its like 345k or something... so toneing it down abit, for this prediction.
340k(Down from the 371k of march 2014) in a 5 weeks month,is 68K per week on average!240K is 60K per week average,so fairly near to march,which had battlefield,final fantasy type HD and of course the super hyped ps4 exclusive,blooborne,plus that it's a more hot month in sales than April...There is mortal kombat for april which will will do something but It was never a system seller or at least a significant system seller!
So what you did isn't really toning down!I don't say that it's impossible but it's not a low expectation as you imply...
P.s Excessive drop for 3DS,-125k,it droped by only 53k from March to April in 2014 without having games...
Also,I don't think that xbone will be above 3DS(I'm not sure but I feel it!)They had only 6k difference in april 2014,109k vs 115k from 159k vs 311k(Unordinary heights because of titanfal release.)This year 3ds has got a revision that keeps getting it dramatically up,for this april 3DS has two games,puzzle and dragons super mario bros edition,which will may give a decent boost and a new 3ds exclusive,xenoblade 3D,which will push some new 3ds units but both will at at least prevent a drop!
Xbone had a huge drop from march to april 2014,because march numbers were inflated by a big game release but anywise it would have a big drop,so I think the same will happen this year but it won't go to the levels of 2014,it's cheaper and mortal kombat might do something!So,I'm seeing it at 150-160k but 3ds hgher than that...
Finally,I'm seeing wii u at 60-65k levels as the continuing trending yoy up suggests!:P
Edit:I forgot to say that the lowest that 3DS can get is 170k-180k in my opinion and by a solid logic!:P And I can say with certainty that it won't go below 150k!:P I expect 190k-200k,same for ps4,i.e a flat yoy april for it!:P