While many companies use your results as a barometer for a persons potential, it may not always help. It all depends on how smart you study/learn and work. If you are found to be weak in that position you wont last long regardless whether you got a 1st class or not.
1st class awards are reward for a students effort in university and should not be seen as the ultimate goal of higher education hence you miss the point of the education itself.
How is "First-Class Honor" Degree benefits us?, In real-life, real world.