Sunni Caliphs v/s Shia Caliphs

Let us take a look at the two routes being adopted to reach the religion.
Sharra fiqa akbarby mulla ali qariis the hanafi book of aqaid.
On the very first page it is stated that the book sets out the aqeedah of ahl'ul sunna wa al jammah.

Everything set out in this book is the aqeedah of hanafi sunni muslim.Mulla ali qari sets out who the 12 khalifas are:

1) abu bakar
2) umar
3) usman
4) ali
5) mu'awiya (l)
6) yazeed bin mu'awiya (l)
7) abdul malik bin marwan
8) walid bin abdul malik bin marwan
9) sulayman bin abdul malik bin marwan
10) umar bin abdul aziz
11) yazeeb bin abdul malik bin marwan
12) hasham bin abdul malik bin marwan
 

Reference: Sharra fiqa akbar, by mulla ali qari, p176(publishers muhmmad saeed and son's, qur'an muhalla)

you might have noticed yazeed (the accursed - maloon) on 6th number.

This was one route, now lets have a look at the other path - the path of ahlul bait-e-muhammad

1) imam ali bin abi talib
2) imam hassan bin ali
3) imam hussain bin ali
4) imam sajjad bin hussain
5) imam baqir bin sajjad
6) imam jafar bin baqir
7) imam kazim bin jafer
8) imam ali bin kazim
9) imam muhammad bin ali raza
10) imam ali bin muhammad
11) imam hassan bin ali
12) imam mehdi bin hassan askari

If the caliphate (khilafat) had stayed with Ali bin abi talib as Shias claim and Abu bakr wasn't made the Caliph, the event of karbala would not have happened.
So these are two routes to reach and recognise deen.
Either you can choose the route of yazeed bin mu'awiya (maloon) or the route of imam hussain bin ali .

decision is yours!
But remember Abu bakr himself once said:
"No one will be able to cross the sirat (path) leading to heaven on the day of judgment unless he gets the stamp of Ali ."

Reference : al sawaiqh al muhriqa,by Ahmad ibn hajar al makki, p126(a sunni book against shias)