[Phil123]

Pretty easy really have 2 tables of player deal exactly the same cards to the players on both tables in the same position have the same flops, turns and rivers. Play for say one hour and compare the chip stacks between the players on each table. If player A on table 1 has bust but player A on table 2 has doubled his stack this would prove that player A on table 2 is more skilful, if he is more skilful then there is skill involved. You could use more tables to demonstrate different skill levels and the results they achieved. I would have the cards generated by computer for ease of dealing the same cards to the different tables.