There have been people since the guru's who have claimed to be prophets too. So, does that mean that we should listen to Joseph Smith or to Elijah Muhammad. If having some claim that you are a prophet and then writing down your message is what makes one a credible prophet, and then we are to follow the most recent of whoever these people are, I assure you that I can produce a new prophet tomorrow.
The standards that I understand are being proposed for prophethood seem very week to me.
Well we are completely convinced that Gurus were perfect in every way. I am trying not to say anything that could be taken as disrespectful to any religion nor do I wanna say anything about gurus that could be wrong or not give them full credit as I am not a perfect person. So, I would suggest that if you really wanna know about gurus, read some material about Sikhs and gurus and see it for yourself how it makes sese to you...