lol Look man, your discussion is cute and all but stop putting in quarters in games you have no idea how to play
Hmmm now to answer your question..."Why can't Mars be similar?" I'll tackle this one with some logic and explain how they're DIFFERENT.
Lets start how solar winds have a hard time stripping away heavier elements like carbon which makes up hmmm 98% of Venus' atmosphere? And maybe due to very high volcanic activity the atoms that do get stripped get replaced by the volcanoes that constantly emit that very same gas?
Oh and Mars! "Why cant Mars do that!" you ask? Well as I stated before, Mars does NOT generate a magnetic field because it does NOT have an active spinning, hot, nickel-iron enriched core, so they are no active volcanoes(which you know played a REALLY big part in creating earths atmosphere),and so what does get striped way does not get replenished.
Now is their any other facet of your ignorance you wish to reveal?
Despite the fact that Mars no longer has an internal dynamo capable of generating a large global magnetic field as on Earth, there is evidence to suggest that Mars may once have had such a dynamo.
Basically, Mars does have a magnetic field, though it behaves differently to the one on Earth.