What would you do in my place? My site is logoemarca.com I have more links and better than my competitor: http://www.opensiteexplorer.org/www....r/a!comparison I stop to make links and hope to be positioned in the SERPs, or keep doing links? It's been almost 2 months my results in the SERPs not changed, they never actually changed with the backlinks, just with the on-page SEO.
I checked out the comparison and noticed that most of your links are nofollow and from non-related sites while your competitor has mostly dofollow links from sites that are theme relevant. It's important to note that relevant links are more important than non relative links with higher PR as far as search results goes. Keep building links from related sites with similar content to boost your search results. It can take some time for Google to index those links and credit you for them so be patient, nothing happens quickly in the SERPs for the most part. You shouldn't stop building links because your competitors will continue to build them and eventually you could lose your high ranking positions. You should setup some natural linking methods such as writing free articles for reprint (with your links in the BIO) so people will naturally link back to you to continue creating links. If you don't have the time to build links, hire a link building service every so often to keep you link count growing.
Notice the "External, Followed Links" I have 410 against 103 of my competitor! http://www.opensiteexplorer.org/www.logoemarca.com/www.supernovastudio.com.br/a!comparison?anything[]=www.logoemarca.com&anything[]=www.supernovastudio.com.br&anything[]=a!comparison
I didn't look through the whole list, but from what I saw many of your links came from non-related sites while your competitor's links mentioned "Logo" in almost every link. That's the reason they're probably ranking well for those keywords, not to mention the domain authority coming from those links or the PR which is hard to tell just by looking at the comparisons. I'd suggest looking for more links from pages that mention logotipo or logo in their title, URL and page content.
Yeah I think more solid backlinks will bring up your rank, you just have to get some high rank backlinks.