Glass is piquing more interest than any consumer electronics device since the iPhone, Plus is thriving, and Docs is by far the best cloud office suite I've seen. I am by no means saying that Google is the best in every market they enter--some of their offerings are pathetic compared to the competition-- but your claims of across the board mediocrity in their non-search products is severely overblown.
The concept behind Glass is fantastic. For all the talk of "cyborgs" and "glassholes", it's clear that it struck a nerve. What we don't have enough information to say yet is if Glass is the new iPad or the new Newton.
That's looking at search queries though, right? Why would any one Google for g+, when there's a link to it on the top left corner of Google's search page?