Simple - because that‘s the way they were designed to be from the outset, at that time. The owning company wanted the Ferrari to be the outright speedster, and the Maser to be more the fast GT. As did the car’s buyers.
But at a financially equivalent level, a £50-£60k Strad is quicker than an equivalent value Ferrari (e.g. 456, 348, 355, 360). It has more power, more noise, better brakes, a more modern chassis, etc. Took mine for a blat today, in glorious sunshine on empty country roads (on essential medical business, of course...) and thoroughly enjoyed it. At no point did I think “I wish I was back in my old 456, 355, 360, etc”).
Obviously a 458 is at a different level in terms of speed, but it’s twice the price and way more common. Still nice though.