Wanna add blatherskite to it?
Not really - it's not a synonym of "preposterous rubbish".
Vettel as good as Senna?
Poppycock, claptrap and complete and utter garbage. 

Agreed. Vettel is muchbetter than Senna.
You're certifiable. Unless you mean he's better at needlessly running his opponents off the road.
From Merriam Webster

BLATHERSKITE
Synonyms: applesauce [slang], balderdash, baloney (also boloney), beans, bilge, blah (also blah-blah), blarney, blather, nonsense, blither, bosh, bull [slang], bunk, bunkum (or buncombe),
claptrap, codswallop [British], crapola [slang], crock, drivel, drool, fiddle, fiddle-faddle, fiddlesticks, flannel [British], flapdoodle, folderol (also falderal), folly, foolishness, fudge,
garbage, guff, hogwash, hokeypokey, hokum, hoodoo, hooey, horsefeathers [slang], humbug, humbuggery, jazz, malarkey (also malarky), moonshine, muck, nerts [slang], nuts, piffle,
poppycock, punk, rot,
rubbish, senselessness, silliness, slush, stupidity, taradiddle (or tarradiddle), tommyrot, tosh, trash, trumpery, twaddle