Actually, this is a problem with most entry level tools. Professional level tools like Omniture Test and Target or Optimost with Autonomy Segments handle MVT testing per segment, segment defined by external variables (appended data or data from Dataxu et al), business variables (return customer, prospect, etc.), or just online variables (IP address Geo, repeat vs. new visitor, etc.)
Professional level, btw, is defined as "costs a lot" and "are painful to use" and "have poor interfaces"; more recent tools give up some of the power and cost for ease of use.
However, as you point out, these easier MVT tools (or Split-Test tools) focus on showing the "winner" or "winning variables", winner defined as "most impactful on the total traffic or sample of this traffic during this time". You are right that this is not the final answer... but it's a good starting place; if you solve for the majority of users, it's usually the biggest step. Then solving for unique smaller groups can often result in lower volume but higher value conversions... if you have time.
That being said, including segment variables in the analysis is a wonderful thing to do, and I encourage it. I look forward to when Visual Website Optimizer and other "entry level" tools include these in their analyses by default... and we can look to the end of Optimost, Omniture TnT, and the other "enterprise" tools.
Professional level, btw, is defined as "costs a lot" and "are painful to use" and "have poor interfaces"; more recent tools give up some of the power and cost for ease of use.
However, as you point out, these easier MVT tools (or Split-Test tools) focus on showing the "winner" or "winning variables", winner defined as "most impactful on the total traffic or sample of this traffic during this time". You are right that this is not the final answer... but it's a good starting place; if you solve for the majority of users, it's usually the biggest step. Then solving for unique smaller groups can often result in lower volume but higher value conversions... if you have time.
That being said, including segment variables in the analysis is a wonderful thing to do, and I encourage it. I look forward to when Visual Website Optimizer and other "entry level" tools include these in their analyses by default... and we can look to the end of Optimost, Omniture TnT, and the other "enterprise" tools.