Sometimes it's good. My cases of 2005 Bowman Chrome and Bowman Draft had perfect collation. If only I'd left them sealed....
And of course you're missing the same cards from your partial sets. If you weren't, then you'd be able to use one of the partial sets to complete the other ones.
Sportlots: svscards http://joelshitshow.com
There's just too many posts to read. If you need me for something, please send me a PM.