Of course you lose a lot of the original's quality, but at least you can understand what you read.
Where FR>EN fails is vocabulary. This text, as you see, is really basic terminology, nothing technical. The French categorize things very differently in technical texts sometimes - to the point of despair for the translator. Google tends to do OK on that to a point, then fail in alarming ways when you least expect it.
A text translated "word for word" to English from French, using the later grammar, will almost look readable. Strange but not really wrong.
Most errors will be from an over-usage of perfect tenses ("I have visited" vs "I visited") and wrong superlatives ("most fast" vs "fastest"), as these are the biggest differences between the two languages.
That's basically the M.O. of all completely automated systems though. Especially when concerning non-trivial things like language translation. Stuff like that requires intelligence in many cases to choose the right word based on the context and information the speaker is trying to communicate.
For example, see http://www.parl.gc.ca/HousePublications/Publication.aspx?Lan... and http://www.parl.gc.ca/HousePublications/Publication.aspx?Lan...
His post is written in very clear, straightforward French with few or no fancy flourishes that might complicate the translation. My French is decidedly not the best, and I have no problem reading the original at a decent tempo - there's the odd word missing from my vocabulary that I had to figure out, but that's it.
(https://en.wikipedia.org/wiki/List_of_English_words_of_Frenc...)