I haven't notice this, I got my ditto and other pokemon just as easy. I did notice the delays were lower.
;_;
It's a flashing red light to me when I can get my target seed on the first try, my very first time attempting Method J abuse, but once I try it on Platinum (after calibrating on that game, mind you) I can't hit my mode delay to save my life. Especially when I got 17/607 probably like 20 times in calibration, and now I can't get it at all.
Just thought there might be some kind of tip. Oh well, back to the frustration...
Edit: OmegaDonut, I did calibrate.