Have you set ADCSRA = 0?
Our measurements may not likely be the same based on several factors. Firstly, you're using a different chip. Secondly, I don't know what your setup looks like to determine what's wrong. It could be a software issue or hardware issue, such as something wrong with the wiring.
Are you asking how to accurately measure current of the chip using a multi-meter or with the 1M Ohmz method Nick showed?
Here, follow these steps to get your power readings: http://www.gammon.com.au/forum/?id=11497
I was able to get the Attiny85V chip down to pretty low power in the uA as well using these steps.