I did the scjp1.4 and thought it was gross, though mainly because the content is dull CS200 stuff. The questions, I think, were laced with trickery, which made for an unpleasant experience taking practice tests.
MS 70-528 seems easier, but really there's much more content covered on the exam, so in the end I found it more difficult. However, I think you'll find studying for this exam far more enjoyable and rewarding than the SCJP.
While I don't think the MS questions use "trickery" to increase the difficulty level of this exam, at least not to the extent the SCJP did, they do use the most subtle tactics to make you choose the wrong answer. Often they'll pair possible answers together where 2 of them will be nearly identical to eachother, and another 2 will do the same...just have to read carefully. They also use bloated questions on several of the questions, making it rather annoying and cumbersome to digest. By the time you get to the answers, you're like 'wtf' man, get on with it already.
It'd be interesting to hear why you are going with the 70-528 instead of the SCWCD exam.
I have to agree with Theodore that -536 is more like SCJP, and 528 like SCWCD. So comparing 70-528 to the SCJP5, as your post requests, is not really comparable in terms of intedend objectives each exam has.
[ September 10, 2008: Message edited by: Michael Raymond Jr. ]