Berlioz loved above all else the music of Beethoven, Spontini, and Gluck. Those where his three "gods" of music. He thought Bach's fugues rather dry and academic, mostly because they were required learning at the Paris Conservatory where Berlioz suffered under the rule of people who loved Bach, and the old French and Italian masters, but who despised German Romantic music and the emerging music of Beethoven in particular. Here is a quote from one of Berlioz's letters (to Stephen Heller) found in his memoirs:
"You request me to tell you if the musical feeling of the big-wigs at Leipzig is good, or at least inclined to what you and I would call the beautiful?
I will not.
If it is true that the creed of all who profess to love high and serious art is : 'There is no god but Bach, and Mendelssohn is his prophet?'
I must not."
The feeling that "There is no god but Bach, etc" was common in Germany around the 1840's (I don't know who coined the phrase, but it wasn't Berlioz) and Berlioz was too much of a romantic to feel the same. I'm not saying he didn't admire J.S. Bach as a musician, but Bach was by no means his god. If anyone, that would definitely be Beethoven.
I just did a Google search and found where Jazzyprof got his quote: quotes and quotations from Mendelssohn. Don't believe everything you read over the Internet.