The three Screenshots aren't new or exklussive - Look at the date of this news... http://www.taktikzone.de/index.php?icn_newsid=1025 ... an check the linked page.
Both free mods are equally good or better in gameplay as the US-Edition of "Wilrdfire", of cource. But the german editon of "Wildfire" published by Zuxxez is a kind of "Extented Edition": It features some technical improvements like 1024 x 768 resolution and up to 10 mercenaries in a squad - These are two very strong reasons to buy it!