Let's say the other influential factors (GMAT/Tofel/GPA...) are same for candidates A & B, candidate A has 2yrs WE and achieved 3 in scale, while candidate B with 6yrs WE and achieved 6 in scale. How does AdCom evaluate these two candidates?
How about the situation when candidate A with 2yrs WE and achieved 2 in scale, while candidate B remain the same?
withmoon> I believe what you're asking is, will they pick someone with more 'potential' over someone with more 'actual achievement'? To begin with, things are often not as clear as you make them out to be. There is no 'scale', for instance (and after all, what would that mean? Does a "3" in consulting mean the same as a "3" in non-profit? Does a "3" achieved in China mean the same as a "3" from the USA? Etc). Instead, the comparison is done in a much less quantifiable way, and is basically done through discussion. Decisions are made by groups of adcom (5-7 of them) sitting around and discussing a candidate, and instead of 'is this guy a 3 or a 5?' the questions tend to revolve around 'where do we see him in 10 years?' 'will he be a good ambassador of the school?' And so on.. Both potential and actual achievement are important. Both tend to reinforce each other, after all- achievement shows evidence of potential, and potential should lead to some level of achievement.
While this may sound confusing, I believe it's not radically different from the way a HR department tends to choose candidates for recruitment. Rarely are candidates given scores. Instead, discussion and trade-offs on potential candidates tends to be the way to go. Regardless, just focus on getting the best application through- thankfully, regardless of how they decide, this doesn't really affect how you'd do your application (clarity of goals, evidence of professional and academic achievement, etc)
Also one question, could you give me some advices about my toefl score?
My toefl score is released, which is 29 24 20 25, 98 total. Should I retake the test or spend more time to sharpen my essays? My gmat score is 750+4.5, and i have four year work experience in investment area. Can I use my gmat score to cover my low toefl score?
As with all aspects of the application, it is useful to think about what this will be used for. The TOEFL test is used as an indication of your ability to fit into an English-dominated academic environment. There are other ways of gleaming that information (eg. your verbal GMAT component, your essays, your interview), but in general they are looking to be comfortable with your English. While Wharton does not have a minimum score, I think a good guide would be to look at other business schools to see what the minimum is, and trying to get above that bar. Say if HBS sets it at 109, scoring 107 or 108 may not be a problem, but 98 may be a bit far from the ideal, and unless they have clear reasons why you did so badly (eg. not enough time to take the TOEFL given your rushed timetable), Wharton may have extremely serious concerns about your English.
The AWA is not a good gauge of English.
Your experience in an investment area also seems not relevant to your English ability.
Having said that, if you do really have a good reason (eg. no time, etc), and it's clear from all the other sources that your English is fine, then you probably shouldn't worry about this.