It's hard to do a direct comparison as they fly on different days....but for a week jolly to CDG from BAH in Feb next year, QR are almost £200 cheaper than Gulf Air........and GF is a non-stop service!!
Total: £705.40
09:45 Depart Manama (BAH)
Arrive Paris (CDG) 18:45 Wed 12-Feb
10hr 0mn Qatar Airways 153 / 15
Connect in Doha (DOH)
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21:20 Depart Paris (CDG)
Arrive Manama (BAH) 09:00 +1 day Wed 19-Feb
10hr 40mn Qatar Airways 16 / 152
Connect in Doha (DOH)
Total: £902.00
01:45 Depart Manama (BAH)
Arrive Paris (CDG) 07:05 Thu 13-Feb
6hr 20mn Gulf Air 19
Nonstop flight
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11:20 Depart Paris (CDG)
Arrive Manama (BAH) 19:40 Thu 20-Feb
7hr 20mn Gulf Air 18
Nonstop flight