[jyu]

You need to address the silent objections the interviewer may have. If you don't, the objection will be brought up after the interview without a chance for you to present your case.

"I don't have the standard number of years, but I have worked in other industries which add value in design decisions."

"I don't have the standard number of years, but I am am competent and hungry to go to the next level"

"I don't have the standard number of years, but I..."

[atmosx]

I would argue that, unless the OP is asked explicitly, the OP should under no circumstance say anything that could be perceived as a weakness and whatever statement starts with "I don't have <whatever>" it does not look good.

Remember interviews are largely about luck and circumstances.

I'd like to wish the OP good luck! :-)