Board Thread:General Discussion/@comment-6003409-20130118040456/@comment-5996288-20130118045315

The trans-scanned card will be level 1 however its base stats will vary depending on the level on the cards used in the trans-scan.

More in depth look at trans-scanning

http://transformers-legends.wikia.com/wiki/Trans-Scan

The game uses percentages through weapons to determine stats, so higher is always going to be better, once you have a max level trans-scanned card upgrade their weapon to max level for max stats.