PDT - What spec/power is your stage 2 ED30? When my car was stage 2 ish (320bhp) I'd easy pull away from standard 335 diesel or petrol.
Sunglasses Ron is your man for roll on knowledge when it comes to these!
I can only comment on my own experiences, where the FWD golf would struggle for grip the RWD car would pull away easily, then both we're similar in performance until high speeds where the BMW was better. On a different day with different drivers the result may have been different.
I had a go against a stg2+ golf in the 335d when it was mapped, the BM walked away from it, again down to grip levels. Golf was driven and owned by a member on here.