The numbers lack context in that they don't specify a rate, merely a value. It makes it sound like 70K women are attacked each year by undocumented immigrants, when the reality is that the number is closer to 1.27K per year since 1955. Let's do some back of the napkin math:
There are about 11 million undocumented immigrants in the US, meaning that the rate of sexual assault victims per undocumented immigrant would be ~0.012%. Meanwhile, in 2006, 300,000 college women were raped.[1] With 300 million people (in 2006), that puts the rate for the general population at 0.1% of victims per person. That's nearly 10x the rate of the undocumented immigrant population, and that's only including college-aged rape victims, rather than sexual assault victims of all ages as the 70K number claims to be.
Meanwhile, we have Trump who has no fewer than 4 woman claiming he sexually assaulted him. Divide that over the 70 years of Trump's life, and at 0.057 women-per-year you have a 1-man rate of 5.7% -- 57x the rate of the general population. Seems like Paul Ryan is targeting the right person, and that Breitbart is using bad logic.
[1]: https://www.nsopw.gov/en-US/Education/FactsStatistics#victim...