The Chernobyl reactor also had no containment vessel, so the initial core failure blew a cloud of radioactive fire into the air. The Fukushima containment vessel kept most of the crap in one place until it could melt into a cohesive mass.
You wouldn't get the graphite fly ash that turned Chernobyl from a localized problem into an international headache, so no, it wouldn't have been as bad as Chernobyl. But it could have been much worse than it was.
Totally different reactor technologies, equivocating them is spurious at best.