win 2 games with 2,5k+ gold on each game in final! wht's wrong?

Hi all...

Well, i played this 2 games in 1...2 days ago, all the oponents are 15++,
i won all games but in final i got 2k~3k of each resource! I think this is where i fail... when i'm not atacking, i make army and i control eco, when i start atacking i focus in combat to microing and minimize losses, but ECO start groing as hell, i was just playing with 3 ranges and in another game with just 2 stables until reach imp.age... this is sick...
i hope another expert can watch this games and give his sujestion... Next step is 16++ =P

TY all COBLers

ooops, i forget to put DLlink, here is it:
Download link: rapidshare.com _LM_2_games.zip

Interesting question. Upload your recorded game and I might take a look. I am no expert but maybe we can discuss it further together.

link added