star wars - Would Finn's attack have succeeded?

At the end of the Last Jedi, Finn attacks the

Battering cannon in a suicide run.

There seemed to be some confusion as to whether the attack was a pointless gesture of resignation, or whether it would accomplish its end, which leads to

Rose knocking him into the salt flats with her own vehicle.

Would the attack have succeeded or was it pointless?

Answer

Based on the (in-universe) opinion of a highly qualified Resistance Flight-Engineer, his attack was doomed to failure.

His comm signature crackled off and he accelerated toward the cannon. Its barrel shone through the lasers, on the cusp of firing. The tremendous heat it generated melted the salt around it, stirring a crimson haze around its treads. With the other skimmers no longer a threat, all the walkers and tanks were targeting Finn. And Rose knew he’d never get through that last stretch alive.

_{^{The Last Jedi: Junior Novelisation}}

and

No, Rose thought, teeth gritted. They’d come too far together for her to watch while he threw his life away. She banked her speeder hard, following Finn’s heading. Her medallion swung wildly on the console. She grabbed it, jamming it around her neck a moment before her speeder smashed into Finn’s, just short of the massive cannon’s muzzle.

_{^{The Last Jedi: Official Novelisation}}