Pub User:
Mr Boeing's machines very commonly have the same EGT, to the nearest single degree, so I imagine the thrust is fairly close to equal too.
Having worked engine performance issues for over 35 years, I find this a truly amazing statement.
Typically pilots will choose to match N1's in order to reduce airframe vibration (this may be more true with tail-mounted engines), and this tends to equalize thrusts. But to expect matched EGT's is hardly reasonable.
(Besides, I never realized Mr Boeing made his own engines...)