Why 4 Horcruxes left, and not 3??

[M. Thitathan]

No: HPFGUIDX 142157

CH3ed: Oy, if we are to credit JKR with doing math we might as well have her do physics as well and say that soul particles are quantum particles and that non-locality applies. So as when one of a paired quantum particles spins to the left, the remaining particle will automatically spin to the right simultaneously regardless of how far apart or closed off from information they are. In which case, when LV kills more people and makes more horcruxes all his soul particles automatically adjust to the new number of fragments so that all of them are of equal size and properties. 
 
Are we making too much of this? If we take DD's words that LV's magical power does not diminish as his soul becomes more ripped as canon. Isn't it enough to assume that all the horcruxes contain soul fragment with equal magical power and that Harry will have to get rid of all of them before facing a LV that is just as magically powerful as he was when all of his horcruxes were still intact?