Don't base weapon effectiveness upon "how it looks". It may look spectacular, but the warhead is still in the 60lbs range, not 500lbs.
Also British analysis during and after the war showed that the effectiveness of such Jabo attacks against enemy tanks had been greatly overrated. Most damage was actually done by disruption of communications, destruction of light support vehicles, supplies, troops etc.
Such a small warhead didn't do much actual damage without an direct hit against a tank, which was difficult to achieve. And even then, destruction was far from being guaranteed.