Um. If Atlas is faster than an Arrow, it has to be because of speed mods.
Put the equivalent speed mods on the Arrow and Atlas will lose. For
example, vref says the 1973 Arrow cruise is 140 knots and the 1973 235
cruise is 133 knots.

We flight plan 142 knots.

Of course, Atlas will haul way more than any Arrow.

Atlas will haul more than any single engine plane short of a Caravan.
He's a beast -- but we love him anyway...

;-)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"