I think that is not correct...
Each vote for a witness adds the amount of MVESTS the "voting account" has to that witness. If that would not be the case, stake based voting would be a joke here on steem.
The thing is, that steemits' stake has not voted for any witnesses yet. So if all three accounts vote for the same person, that gives any account with an active witness +118225 MVESTS.
So he can give his 30 witness votes to random accounts and they will all have
+118225 MVESTS.
I added up all top 50 witnesses and it amounts to 2990000 MVESTS
We have 210M STEEM powered up of which at least 90M STEEM have not voted for witnesses. That leaves approx. 120M STEEM.
Do you really think 120M STEEM could distribute +3000000 MVESTS if my logic was incorrect?
Your MVESTS are not split up across all witnesses you voted for, every witness gets the full amount.