Dumb statement. An Abrams' armor is an OFFENSIVE tool because it provides mobility under fire. Too many folks tend to look at Strykers as tanks already and this sort of PR encourages that line of thought. A Stryker (MGS or otherwise) is a troop carrier. Period.
What do we make then, of the USMC LAV? Troop carrier? Wanna-be IFV? Consider the way in which they have been employed the past 20 years.