Sprecher is a very good rootbeer, and has great honey and licorice root notes to it..I love it...but Barq's is very unique..it has a good ginger bite to it...I remember one of their slogans use to be "Barq's got bite"......Sorry I can't be of more help, but I can say that the sprecher doesn't taste like Barq's.
5 gal secondary: Strawberry Mead
1 gallon secondary: Blood orange Mead
1 gallon secondary: Grape Mead
On Tap: Blackberry Blonde Ale
On Tap: Apple/Cherry Hard Cider