It's called simple math... something you should have learned in high school Algebra class. If they were to offer 50 Mbps down (as the article mentioned, it would most likely be in the 20-50 Mbps range) and you only have 1 Mbps upload that means the download/upload ratio is 50:1. Even the low end of that scale, 20:1, is still pathetic.
Something you learned before Algebra class is reading. No where in the article does it say the upload for 20-50 would be 1Mb. In fact today the 16Mb tier is 2Mb up and with powerboost people are getting 2M up at lower download speeds.
I don't see why a 50mb would have a lower upstream.