Nobody knows exactly how the google works, I have submitted just my rss feeds to google with the webmaster tools, and I indeed have pagerank, some other pages has page rank even without being inside anything provided to google, as far as I understand, google uses the sitemaps (and rsss) to find pages faster, that’s all.
Hakuna anayejua hasa jinsi google kazi, Mimi nimeusalimisha tu wangu rss feeds kwa google na zana webmaster, na mimi kwa kweli kuwa na PageRank, baadhi kurasa nyingine ina ukurasa cheo hata bila ya kuwa ndani ya kitu chochote zinazotolewa kwa google, mbali kama mimi kuelewa, google matumizi sitemaps (na rsss) kupata kurasa kasi, hayo ni yote.