Except, for some reason, the capital R in Helvetica, which is a very curvy letter.
But the R only curves so that its leg meets the base at a logical angle. Arial's straight leg looks straighter, but if you isolate it as a piece itself then that straight part cuts off at a diagonal angle to maintain the flat bottom.
Oh, wow, interesting; I hadn't thought about it that way.
(The R does still have a little serif though, which always bothers me.)
It's easier, you pay for Helvetica while Arial is free. Also no graphic designer of at least basic skills uses Arial. Arial is only used on the Web.
And, you know, all of Ikea.
No, they switched from Futura to Verdana.
Ah, crap, you're right.
Arial would be better than Verdana by orders of magnitude :)