For those interested, i’ve solved my problem using sizeof($wp-query->posts)
The end-result is this content-news.php template
<?php
//echo sizeof($wp_query->posts);
//var_dump($wp_query);die();
if(sizeof($wp_query->posts) == 4) : ?>
<?php if( $wp_query->current_post == 0 ) : ?>
<h3><?php the_title(); ?></h3>
<div class="row">
<div class="col-md-12">
<p><?php the_excerpt(); ?></p>
<p><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
</div>
<div class="fh5co-spacer fh5co-spacer-sm"></div>
<?php else : ?>
<?php if($wp_query->current_post == 1) : ?>
<div class="row row-eq-height">
<?php endif; ?>
<div class="col-md-4 col-sm-6">
<h3><?php the_title(); ?></h3>
<p><?php the_excerpt(); ?></p>
<div class="fh5co-spacer-xs"></div>
<p class="bottom-align-text"><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
<?php if($wp_query->current_post == 3) : ?>
</div>
<?php endif; ?>
<?php endif; ?>
<?php elseif(sizeof($wp_query->posts) == 3) : ?>
<?php if( $wp_query->current_post == 0 ) : ?>
<h3><?php the_title(); ?></h3>
<div class="row">
<div class="col-md-12">
<p><?php the_excerpt(); ?></p>
<p><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
</div>
<div class="fh5co-spacer fh5co-spacer-sm"></div>
<?php else : ?>
<?php if($wp_query->current_post == 1) : ?>
<div class="row row-eq-height">
<?php endif; ?>
<div class="col-md-6 col-sm-6">
<h3><?php the_title(); ?></h3>
<p><?php the_excerpt(); ?></p>
<div class="fh5co-spacer-xs"></div>
<p class="bottom-align-text"><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
<?php if($wp_query->current_post == 2) : ?>
</div>
<?php endif; ?>
<?php endif; ?>
<?php elseif(sizeof($wp_query->posts) == 1 || sizeof($wp_query->posts) == 2) : ?>
<h3><?php the_title(); ?></h3>
<div class="row">
<div class="col-md-12">
<p><?php the_excerpt(); ?></p>
<p><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
</div>
<div class="fh5co-spacer fh5co-spacer-sm"></div>
<?php else : ?>
<?php if( $wp_query->current_post == 0 ) : ?>
<h3><?php the_title(); ?></h3>
<div class="row">
<div class="col-md-12">
<p><?php the_excerpt(); ?></p>
<p><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
</div>
<div class="fh5co-spacer fh5co-spacer-sm"></div>
<?php else : ?>
<?php if($wp_query->current_post == 1) : ?>
<div class="row row-eq-height">
<?php endif; ?>
<?php if($wp_query->current_post == 4) : ?>
<h3><?php the_title(); ?></h3>
<div class="row">
<div class="col-md-12">
<p><?php the_excerpt(); ?></p>
<p><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
</div>
<?php else : ?>
<div class="col-md-4 col-sm-6">
<h3><?php the_title(); ?></h3>
<p><?php the_excerpt(); ?></p>
<div class="fh5co-spacer-xs"></div>
<p class="bottom-align-text"><a href="https://wordpress.stackexchange.com/questions/216989/<?php the_permalink(); ?>" class="btn btn-primary btn-sm">Lees Meer</a></p>
</div>
<?php endif; ?>
<?php if($wp_query->current_post == 3) : ?>
</div>
<div class="fh5co-spacer fh5co-spacer-sm"></div>
<?php endif; ?>
<?php endif; ?>
<?php endif; ?>