The keywords on my landing page are all capitalized while the keywords I have in ad group are lower case. Should I match them up for the best relevancy?
it does not make a difference... however I'm not sure how well CAPS ON A LANDING PAGE WOULD PLAY OUT... Its kind of annoying
Caps don't matter on the landing pages but google does differentiate on the keyword level. For instance if you target keyword and KEYWORD and KeyWord Google knows the difference.
If you mean bidding on: [Widgets] [widgets] and [WidGets], and someone types in Widgets, Google doesn't know the difference ... It will just randomly select one and you'll have data spread out amongst the 3 of them.