Yes but there are two classes of shares. The Glazers hold the 'B' Class shares, which carry 10 votes per share. The rest are 'A' Class shares, which carry 1 vote per share.
Under normal circumstances if anyone outside the Glazer family buys the B Class shares, they revert to A Class shares. However Ratcliffe has bought 25% of each class of shares but with the proviso that the B Class shares he's bought retain their voting rights. So he has 25% of united shares.
The interesting thing is that he's paid $33 per share, but the shares were still being quoted at just under $20 on the NYSE. Normally you'd expect the price to reflect a significant transaction like that but it's been known about for a while and the share price has only briefly gone over $25. That tends to suggest that the market thinks Ratcliffe has overpaid. We'll see when the NYSE opens tomorrow (as Boxing Day isn't a public holiday in the USA) but I doubt it'll move much.
What's largely being ignored in this is that the Glazers apparently benefit to the tune of $900m by selling their own shares. Im guessing they won't be putting any of that into ground improvements or players.