Pastor Paul prays 20*6=<<20*6=120>>120 days per week, except Sunday.
On Sunday, Pastor Paul prays 2*20=<<2*20=40>>40 times.
Per week, Pastor Paul prays 120+40=<<120+40=160>>160 times.
Pastor Bruce prays half as much as Pastor Paul does on all days except Sunday, for a total of 120/2=<<120/2=60>>60 times.
Pastor Bruce prays twice as much on Sundays as does Pastor Paul, or 40*2=<<40*2=80>>80 times.
In total, Pastor Bruce prays 60+80=<<60+80=140>>140 times per week.
Thus, per week, Pastor Paul prays 160-140=<<160-140=20>>20 more times per week than Pastor Bruce.
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