What do you see as the main strengths and weaknesses of British evangelicalism?

That's the question Evangelicals Now asked Tim Keller, his answer is interesting, I just wish it was a bit more detailed:

TK: "Could I pass on that one? I’d like to be invited back! I’ll mention just one difference between British/European Christianity and US Christianity that has to do with the theory/praxis spectrum. Americans are more pragmatic, more anti-intellectual and skeptical of ‘experts’, and less able to follow complicated arguments. British evangelicalism tends to be more biblically and theologically rigorous, they demand more close exegesis and value expository preaching. This is a great strength, I believe, and one which I have profited from for years. However, (to my eyes) British evangelicals also tend to stay locked in their theory without much of an idea of how to organise and put their theories into practice. A typical criticism of British evangelical preaching is that it is theoretical, not heart-engaging or life-changing."

Is Keller right?