Although you would have been placed in the same division, Bronze 5, your MMR would not be the same if you were to go 0/10 or 7/3. If you wen't 0/10 you wouldn't be gaining as much LP per win, by going 7/10 you will most likely see high LP gains such as 25-35 LP per win and only lose maybe 10-15. So there is a point of the first 10 matches. Remember that games after placements are more important than placement games.
[{quoted}](name=Jungle Shade,realm=NA,application-id=3ErqAdtq,discussion-id=AIHdpz9I,comment-id=,timestamp=2016-01-24T03:59:40.757+0000)
For those who don't understand why there are MMR resets and why Placements are how they are take into consideration the following.
The game is constantly changing, Players can be a Bronze material player one patch and a Gold Player in another patch. Don't expect to be the same rank every season just because you ended S5 as X rank. The game is always changing that means the player must adapt to these changes. Some players adapt to change better than others, that is why they are ranked higher. The point of the MMR Reset is to display how a player has adapted to these changes, which means the rank you're placed at isn't so significant. 10 Game is statistically not a large enough sample size to draw any conclusions, so stop worrying about your Rank and continue playing more games.
For more information on Placement Rankings
http://boards.na.leagueoflegends.com/en/c/gameplay-balance/E9nkYATc-psa-regarding-ranked-placement-and-seedings-for-all-who-are-confused