Thanks for looking out. She sent me a note. I expect others to give credit where it's due if they use it in derivative works or for their personal use elsewhere on the web. Being able to download a picture doesn't mean they don't have to do that.
Rarity for some reason managed to lift 2 tons TOM and have some experience in martial arts, but she is still Unicorn, you can turn Unicorn magic off with no magic rule or magic restrain ring, or you can tied up wings with no flying rule on pegasus, but how can you turn off Earth Pony strength and endurance ?, thats it, you can not, Earth ponies will always have huge advantage in all sports what have no magic and no wing rule in it, poor Rarity.
Applejack: Now just stop trying to mess with my contraptions. It ain't gettin' any harder for me to kill ya! You know where you oughta hide next time? Back in France. Dominated, you turncoat! Dominated, you snake! This skunk's startin' to smell. Slither on back to hell, Rarity! That's what my daddy taught me to do to backstabbers. You're a looong way from France, girl. Don't go meddelin' in my business. You are a coward an' a scoundrel. If y'all had more gadgets for killin', you wouldn't need so many for hidin'. I just beat on your sneaky ass like a mule, girl!
Rarity: "Yippee ki-yay, my dead, illiterate Applejack!" "Howdy, pardner!" "Happy trails, laborer!" "Did I throw a 'wrench' into your plans? (laughs maniacally)" "Not much of a quick-draw, are you, pardner?" "Giddyup now -- to hell!"
I sincerely doubt that Rarity, working with her Magic and now and then front legs would have enough physique to out-run Applejack, who's not only basically working all day every day, but performs most of her work using her hind legs, which are vital for running. Not only would Rarity run out of breath long before Applejack, but I doubt she'd ever even be able to catch up.
... I'm sorry for this. A lot of time and a nerdy brain are my only excuse.
I don't think Rarity's athletic ability--however good that might be--is something that's really determinable considering it's not something the show focuses on, but it's definitely there (Sisterhooves Social, anyone?) Granted, Applejack would have the advantage and I'm not saying Applejack wouldn't win, it'd just be more interesting (at least to me) were Rarity able to have athletic capabilities despite her lack of outright strength like AJ and Rainbow Dash have.
It's alright I suppose my excuse would be that I'm just as girly as Rarity and I'm also an athlete--but no one would take me to be one. I figured if I could be athletic & girly, why couldn't Rarity be?