I don't think anyone really answered his question...
About the stat, some said it turned worst, some said no difference while some said it is better.
So all of it back to the 1st rule, stats are always random.
Now if you don't mind spending evolve stone on low lvl homu, the extra stat might help early leveling but you'll probably disappointed if the homu turns bad when higher level. Or you can spend times leveling non-evolve homu to level 40~60 to see if the homu in good stat before you decided to keep it.