I think this thread is now going round in circles. The gentleman in question was caught bang to rights on two counts, the police have then asked for other evidence to be considered when sentencing!
And while the sentence seems Draconian it is down to the past reputation of football fans and that...
Sorry, you are wrong. Not enough evidence to secure a conviction is completely difference to having no evidence.
The CPS will want "enough" evidence before pushhing ahead - this does not constitute no evidence.